Utility work across from the will leave traffic barely doing 30 on Route 30 starting today.
Motorists heading east from Lyman Street face detours, and should consider alternate routes, town officials said in a press release on Westborough's website.
Motorists can still go to the post office, UMass Memorial Healthcare and sites west of the post office, the press release states.
Crews will start at 9 a.m.
The sidewalk will be closed on the south side of the street, within 100 feet of either side of 129 East Main St., during the work, the press release says.